Spring-wheel.



I. A. ADOLFSON.

SPRING WHEEL.

APPLICATION FILED IAN-21.1915

- Patented N0v.16,1915.

` @sur 4 JOHN AXEL ADOLFSON, 0F DULUTl-I, MINNESOTA.

SPRING-WHEEL.

Specification of Letters Patent.

Patented Nov. ie, 1915.

Application led January 21, 1915. Serial No. 3,544.

To @Zlio/wm t may concern.'

Be it known that I, JOHN A. ADoLFsoN, a citizen ot the United States, residing at Duluth, in the county ot St. Louis and State ot Minnesota, have invented a new and usetul Spring-VV heel, ot which the tollowing is a specification. y

riihe device forming the subject matter ot this Aapplication is a spring wheel and the invention, in its broadest aspect, aims to provide a device ot this tvpe in which pneumatic elements subject to puncture may be dispensed with.

Specifically, the invention aims to improve the springs which support the rim yieldingly on the telly, and to provide novel means tor assembling thek springs both with the telly and with the rim.

1t lis within the scope ot the disclosure to improve generally and to enhance the utility ot devices ot that type to which the present invention appertains.

lVith the above and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement ot parts and in the details ot construction hereinafter described and claimed,r it being understood that changes in the precise embodiment ot the invention herein disclosed can be made within the scope ot what is claimed without departing trom the spirit ot the invention.

In the accompanying drawing Figure 1 shows the invention in side elevation, parts being broken away and sectioned; Fig. 2 isa cross section taken on the line 2-2 ot F ig. 1; Fig. 3 is a perspective showing one ot the rim carried lugs; Fig. 4 is a cross section on the line 4 4 ot Fig. l. Y

In carrying out the present invention there is provided a hub 1 trom which radiate spokes 2 supporting a telly 3.

Surrounding the telly 8 but spaced theretrom is a rim 4 which may carry a tire 5 ot anv desired construction. The rim 4 embodies a fixed side plate 6 adapted to move in slidable contact with one edge ot the telly 3. Through the fixed side plate 6 pass bolts 7 or other securing elements, the nuts on the bolts 7 being indicated by the reference character 8. The bolts 7 pass through a removable side plate 9 which is in l slidable contact with one edge ot the telly 3 and the nuts 8 serve to hold the removable side plate 9 in place.

rthe bolts 7 pass' through lugs, denoted generally 'by theV numeral 12, the opening in the lug through which the bolt 7 passes be- .ing denoted by the reference character 27. The lug 12 comprises a body portion 14 and shoulders 15 projecting beyond the body 14 circumterentiallv ot the wheel, the shoulders 15 preferably being inclined as clearly shown in Figs. 1 and 3. The rim 4 may be provided with bosses 10 received in' openings'll formed in the body portion 14 otvr the lug 12 and thus the lug is prevented. trom moving circumterentially ot the telly. `Each lug 12embodies a fixed end wing 16 tormed integrally with the body 14 and with the shoulders 15. A removable end wing 17 is shown and the same is disposed between one end ot the lug 12 and the removable side plate 9, the removable end wing 17 being provided with an opening 18 through whichthe bolt 7 passes.

Mounted on the telly 3 between the lugs 12 are spring retainers 19, each ot which is ot H-shape and embodies flanges 2O and a web 21 connecting the flanges. The flanges 20 are straddled on the telly 3 and preterably are counter-sunk into the sides ot the telly, as clearly shown in Fig. l, so as to permit the side plates 6 and 9 to reciprocate in contact with the telly, without torming lateral openings between the side plates and the telly, through which openings dirt might find its way within the contour ot the structure. Securing elements 28 pass through the flanges 20 and serve to hold the retainers 19 on the telly 3. Beyond the periphery ot the telly 3, the flanges 20 ot each retainer are united by a transverse element or aXle 22 upon which is journaled tor rotation a tubular roller 23.

The invention comprises a plurality ot springs, the springs being shown as comprising two leaves 24, although a greater or less number ot leaves may be employed it deemed expedient. The adjacent or contacting taces ot the leaves 24 are straight and flat as shown at 25, while the outer or remote taces ot the leaves 24 converge as they approach the ends ot the springs, thus to make the springs thicker in their middle` portions than at their ends, the taper. 01:'` the springs being-indicated at 26. i, i

The springs are engaged in their intermediate portions beneath the rollers 23 and v thus are held in tangential relation With respect to the felly 3. The ends of the springs f rest upon the shoulders 15 of' adj oiningV lugs l2.

Y Noting` Fig. 1 of the drawings it will be vobserved that the springs extend in a straight line between spaced .points on the rim at and are disposed tangentially ofthev felly l3. Owing to this construction the 'f springs Will yield with equal Jfacility adja- AVcent their ends, either in anV outward direc- 8 are removed and ythe side'plate 9 is de? taehed, after which, the Wings 17 may be re- Ymoved. Thereupon the rim i may be moved sidewise, the endsY of the springs sliding off endvvise so as to disengage the same from be-V neath the rollers 23. f

i Having thus'desoribed the invention, vvhat is claimed is In a spring Wheel, a felly; a rim ,lugs carried bv the rim, each lug including a body, shoulders disposed on opposite sides `of the body, circumferentially of ythe rim, and a Xed end Wing; a removable end Wing; a removable side platein slidable contact with the felly; securing elements uniting the removable side plate and the removable Wing With the lug; springsV each extended in a straight line between the body portions of adjoining lugs, the ends of the springs resting on theshoulders and being held againstlateral movement by the Wings; and :telly 1 i carried means for engaging the intermediate vportions of the springs.

In testimony .that I claim the foregoing as my in the presence of'two Witnesses Y J JOHN AXEL A'DONLFSON.4 Witnesses: v,

' IV. DUNDEsHiRE,

JL E. COOLEY.

50 own, I have hereto atlixed .my signature,V Y

Copies of this patent may be obtained for` five eencs each, Vby addressing thel Commissioner of Eatents. i

Washington D, C. Y f 1 

